Spring mvc @PathVariable

Question

Can you give me a brief explanation and a sample in using @PathVariable in spring mvc? Please include on how you type the url?
I\'m struggling in getting th

Answer 1

Annotation which indicates that a method parameter should be bound to a URI template variable. Supported for RequestMapping annotated handler methods.

@RequestMapping(value = "/download/{documentId}", method = RequestMethod.GET)
public ModelAndView download(@PathVariable int documentId) {
    ModelAndView mav = new ModelAndView();
    Document document =  documentService.fileDownload(documentId);

    mav.addObject("downloadDocument", document);
    mav.setViewName("download");

    return mav;
}